Self-compacting shrinkage-compensating concrete crack detection experimental device

Abstract

The invention discloses a self-compacting shrinkage-compensating concrete crack detection experimental device, and relates to the technical field of crack detection, the self-compacting shrinkage-compensating concrete crack detection experimental device comprises a workbench, and further comprises a placement table which is fixedly mounted at the top of the workbench, a working motor is fixedly mounted at the top of the placement table, and a triangular supporting plate is fixedly mounted at the top of the workbench; an output shaft of the working motor penetrates through and is rotationally installed on the triangular supporting plate, and the outermost end of the output shaft of the working motor is fixedly installed outside the connecting plate. A support is fixedly installed at the top of the workbench, in the concrete crack observation experiment, long-time stable light source observation experiment can be carried out only by placing the workbench outside a concrete crack to be observed and starting an annular fixed lamp and a working motor, meanwhile, through rotation of a connecting plate and an attaching buckle plate, the light source can be stably observed, and the concrete crack can be conveniently observed. The light shield can be kept clean while a stable light source is provided, and the situation that the illumination effect is affected by dust and other impurities due to long-time observation is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of crack detection, and in particular to a self-compacting shrinkage compensating concrete crack detection experimental device. Background Art

[0002] Self-compacting shrinkage compensating concrete is a high-performance building material with self-compacting ability and shrinkage compensating characteristics, which can significantly reduce the porosity and crack risk inside the concrete. Cracks are one of the common defects in concrete structures. They not only affect the aesthetics of the structure, but may also reduce the bearing capacity and durability of the structure. Therefore, crack detection of self-compacting shrinkage compensating concrete is of great significance, which can timely discover and deal with potential quality problems and ensure the safety and stability of the structure. Crack detection methods include visual detection, ultrasonic detection, infrared thermal imaging detection, radar detection, destructive detection and other detection methods.

[0003] In the prior art, when observing concrete cracks, light conditions are an important factor that needs to be considered. Factors such as the intensity, direction and color of the light will affect the results of the observation. Too strong or too weak light may make the details of the cracks difficult to distinguish. The direction of the light will also affect the visibility of the cracks. If it is necessary to observe the cracks for a long time, the light source is prone to changes in intensity, which will affect the accuracy of the observation experiment. Summary of the invention

[0004] The purpose of the present invention is to provide a self-compacting shrinkage compensating concrete crack detection experimental device to solve the problem that the above-mentioned light source is prone to change in strength, thereby causing the accuracy of the observation experiment.

[0005] The present invention is achieved through the following technical solutions: A self-compacting shrinkage compensating concrete crack detection experimental device, comprising a workbench and: A placing table, which is fixedly installed on the top of the workbench, a working motor is fixedly installed on the top of the placing table, a triangular support plate is fixedly installed on the top of the workbench, the output shaft of the working motor passes through and is rotatably installed on the triangular support plate, and the outermost end of the output shaft of the working motor is fixedly installed on the outside of the connecting plate; A bracket is fixedly installed on the top of the workbench, an annular fixed lamp is fixedly installed on the outside of the bracket, the outside of the annular fixed lamp is fixedly installed on the inner wall of the light shield, the connecting plate is rotatably installed on the outside of the light shield, a fitting buckle plate is fixedly installed on the outside of the connecting plate, the fitting buckle plate is slidably installed on the light shield, the curvature of the fitting buckle plate is the same as the curvature of the outer wall of the light shield, and a cleaning brush is fixedly installed on the fitting buckle plate at the position of the inner wall of the light shield to allow sufficient light through diffuse reflection.

[0006] Furthermore, the light shield is also provided with an exhaust mechanism, which includes an exhaust channel. The exhaust channel is fixedly opened at the bottom of the inner wall of the light shield to effectively block external light.

[0007] Furthermore, an upper curved rod is fixedly installed on the side wall of the discharge channel, and a movable rod is penetrated and movably installed on the top of the discharge channel. The movable rod is composed of a straight rod in the straight part, a curved rod in the curved part and a semicircular protrusion on the top, providing power for the movement of the movable rod.

[0008] Furthermore, the movable rod is slidably installed in the sunshade through the bent rod of the bent part, an L-shaped rod is fixedly installed on the outside of the fitting buckle plate, and an extrusion ball is fixedly installed on the outside of the L-shaped rod to facilitate the extrusion effect between the extrusion ball and the semicircular protrusion.

[0009] Furthermore, an elastic element is provided between the outside of the movable rod and the side wall at the top of the discharge channel, and an impact rod is fixedly installed outside the straight rod of the straight part of the movable rod, and the impact rod can generate vibration with the upper curved rod to promote the shaking-off effect.

[0010] Furthermore, the sunshade is also provided with an auxiliary mechanism, which includes a vent, and the vent is fixedly opened on the sunshade to ensure good ventilation inside and outside.

[0011] Furthermore, one end opening of the vent is located on the inner side wall of the light shield, and the other end opening of the vent is located on the back of the light shield, so that the vent is hidden inside the light shield to avoid external interference with the ventilation effect.

[0012] Furthermore, the opening of the vent at one end of the inner wall of the light shield is located on a cleaning path of a cleaning brush, and the cleaning brush can achieve a cleaning effect on the opening of the vent.

[0013] Furthermore, a No. 1 ball is fixedly installed on the outside of the impact rod, a lower curved rod is fixedly installed on the outside of the upper curved rod, and a drooping rod is fixedly installed on the bottom of the impact rod.

[0014] Furthermore, a No. 2 round ball is fixedly installed at the bottom of the drooping rod, and the No. 2 round ball is arranged to fit the bottom surface of the discharge channel.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The present invention, by providing a light shield and an annular fixed lamp, can also reduce the generation of shadows through the diffuse reflection lighting effect, thereby providing a relatively uniform and stable light environment for crack observation. In the concrete crack observation experiment, it is only necessary to place the workbench outside the concrete crack to be observed, start the annular fixed lamp and the working motor, and then the observation experiment of a long-term stable light source can be carried out. At the same time, by rotating the connecting plate and the fitting buckle plate, the cleanliness of the light shield can be ensured while providing a stable light source, thereby preventing dust and other impurities contaminated by long-term observation from affecting the lighting effect; 2. The present invention is provided with a discharge mechanism and a discharge channel. When the working motor drives the fitting gusset plate to rotate through the connecting plate, the fitting gusset plate can drive the L-shaped rod and the extrusion ball to rotate counterclockwise. When the fitting gusset plate rotates counterclockwise to the outside of the discharge channel, the fitting gusset plate continues to rotate, and the fitting gusset plate can drive the cleaning brush to contact the upper curved rod. The upper curved rod can remove impurities such as dust attached to the cleaning brush, so that the impurities can fall into the discharge channel. 3. In the present invention, when the movable rod is squeezed outward by the squeezing ball, the movable rod will drive the impact rod to follow the movement, and the impact rod can impact the upper curved rod, so that the upper curved rod is impacted to generate vibration, so that the dust and other impurities attached to the upper curved rod can be shaken off into the discharge channel, thereby improving the collection efficiency. At the same time, when the vibration of the upper curved rod contacts the cleaning brush, the dust and other impurities attached to the cleaning brush can be better removed, and the vibration has the effect of promoting the cleaning brush to clean itself, thereby improving the cleaning efficiency. 4. The present invention is provided with an auxiliary mechanism, a drooping rod is provided on the impact rod, and a lower bending rod is provided on the upper bending rod, so as to promote the shaking off and collection effect of impurities, and at the same time promote the discharge effect of the discharge channel, thereby improving the overall cleaning effect, improving work efficiency, and ensuring the stable operation of long-term observation experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall external structure of the present invention; Figure 2 It is a schematic diagram of the overall rear view structure; Figure 3 is a schematic diagram of the external structure of the connecting plate; Figure 4 It is a schematic diagram of the external local structure of the fitting gusset plate; Figure 5 It is a schematic diagram of the partial structure inside the sunshade; Figure 6 for Figure 5A schematic diagram of the enlarged structure in the middle; Figure 7 It is a schematic diagram of the external structure of the movable rod.

[0017] The reference numerals represent: 1-workbench, 2-placing table, 3-working motor, 4-triangular support plate, 5-light shield, 6-ring fixed lamp, 7-cleaning brush, 8-connecting plate, 9-fitting buckle plate, 10-discharge channel, 11-upper curved rod, 12-movable rod, 13-semicircular protrusion, 14-L-shaped rod, 15-squeezing ball, 16-impact rod, 17-No. 1 ball, 18-lower curved rod, 19-drooping rod, 20-No. 2 ball, 21-vent, 22-bracket, 121-straight rod, 122-curved rod. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0019] like Figures 1 to 7 As shown, the present invention includes a workbench 1, and also includes: A placing table 2 is fixedly mounted on the top of the workbench 1, a working motor 3 is fixedly mounted on the top of the placing table 2, a triangular support plate 4 is fixedly mounted on the top of the workbench 1, an output shaft of the working motor 3 penetrates and is rotatably mounted on the triangular support plate 4, and the outermost end of the output shaft of the working motor 3 is fixedly mounted on the outside of the connecting plate 8; A bracket 22 is fixedly installed on the top of the workbench 1, and an annular fixed lamp 6 is fixedly installed on the outside of the bracket 22. The outside of the annular fixed lamp 6 is fixedly installed on the inner wall of the light shield 5. The connecting plate 8 is rotatably installed on the outside of the light shield 5. A fitting buckle plate 9 is fixedly installed on the outside of the connecting plate 8. The fitting buckle plate 9 is slidably installed on the light shield 5. The curvature of the fitting buckle plate 9 is the same as the curvature of the outer wall of the light shield 5, ensuring that the fitting buckle plate 9 can fit the outer wall of the light shield 5 and rotate. The fitting buckle plate 9 is located on the inner wall of the light shield 5 and a cleaning brush 7 is fixedly installed thereon.

[0020] In the above technical scheme, since light conditions are an important factor to be considered when observing concrete cracks, factors such as the intensity, direction and color of light will affect the observation results. Too strong or too weak light may make the details of the cracks difficult to distinguish, and the direction of light will also affect the visibility of the cracks. Therefore, when conducting experimental observations, the workbench 1 is placed outside the concrete crack to be observed, and then the annular fixed lamp 6 is started to provide lighting effects. The annular fixed lamp 6 produces diffuse reflection through the action of the sunshade 5, so that the light effect is sufficient, and the sunshade 5 avoids interference from external light, etc. The diffuse reflection lighting effect can also reduce the generation of shadows, thereby providing a more uniform and stable light environment for crack observation. At the same time, if long-term illumination observation is required, the working motor 3 can be started to start working, and the working motor 3 can drive the connecting plate 8 to start rotating counterclockwise, and the counterclockwise rotation of the connecting plate 8 will drive the fitting buckle plate 9 starts to rotate counterclockwise, and the counterclockwise rotation of the fitting buckle plate 9 can rotate counterclockwise along the light shield 5, and the fitting buckle plate 9 drives the cleaning brush 7 to rotate counterclockwise, so that the cleaning brush 7 can clean the inner wall of the light shield 5 during the counterclockwise rotation of the fitting buckle plate 9, so as to avoid the dust and other impurities contaminated by long-term observation affecting the lighting effect, and the rotation of the fitting buckle plate 9 on the outer wall of the light shield 5 can prevent external interference, and can also warn the surrounding staff that an experiment is being conducted here. In summary, in the concrete crack observation experiment, it is only necessary to place the workbench 1 outside the concrete crack to be observed, start the annular fixed lamp 6 and the working motor 3, and then a long-term stable light source observation experiment can be carried out. At the same time, through the rotation of the connecting plate 8 and the fitting buckle plate 9, the cleaning of the light shield 5 can be ensured while providing a stable light source, so as to avoid the dust and other impurities contaminated by long-term observation affecting the lighting effect.

[0021] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in the present invention, the light shield 5 is also provided with a discharge mechanism, which includes a discharge channel 10, which is fixedly opened at the bottom of the inner wall of the light shield 5, so that the impurities cleaned by the cleaning brush 7 can be discharged in a centralized manner, and an upper curved rod 11 is fixedly installed on the side wall of the discharge channel 10, and a movable rod 12 is movably installed through the top of the discharge channel 10, and the movable rod 12 is integrally composed of a straight rod 121 of a straight part, a curved rod 122 of a curved part and a semicircular protrusion 13 on the top, and the movable rod 12 passes through the curved part. The bent rod 122 is slidably installed in the sunshade 5, an L-shaped rod 14 is fixedly installed on the outside of the fitting buckle plate 9, and an extrusion ball 15 is fixedly installed on the outside of the L-shaped rod 14. An elastic element is provided between the outside of the movable rod 12 and the side wall of the top of the discharge channel 10. The elastic element here uses a metal spring, so that the sliding of the movable rod 12 has an elastic restoring force, so that in the absence of external force, the movable rod 12 can be restored to the initial position by elastic force, and an impact rod 16 is fixedly installed on the outside of the straight rod of the straight part of the movable rod 12.

[0022] In the above technical scheme, when the working motor 3 drives the fitting buckle plate 9 to rotate through the connecting plate 8, the fitting buckle plate 9 can drive the L-shaped rod 14 and the squeezing ball 15 to rotate counterclockwise. When the fitting buckle plate 9 rotates counterclockwise to the outside of the discharge channel 10, the fitting buckle plate 9 continues to rotate, and the fitting buckle plate 9 can drive the cleaning brush 7 to contact the upper curved rod 11. The upper curved rod 11 can remove impurities such as dust attached to the cleaning brush 7, so that the impurities can fall into the discharge channel 10. At the same time, the contact between the cleaning brush 7 and the upper curved rod 11 can In order to perform reverse cleaning of the cleaning brush 7 and improve the subsequent cleaning effect of the cleaning brush 7, when the L-shaped rod 14 drives the squeezing ball 15 to move counterclockwise to the semicircular protrusion 13, the fitting buckle plate 9 continues to move, and the L-shaped rod 14 can drive the squeezing ball 15 to squeeze the outside of the semicircular protrusion 13, so that the semicircular protrusion 13 is squeezed downward. Since the curved part of the movable rod 12 slides inside the light shield 5, after the semicircular protrusion 13 is squeezed downward, the curved part of the movable rod 12 slides in an arc shape inside the light shield 5, so that the movable rod 12 is squeezed downward by the curved part. The sliding of the curved rod pushes the straight rod part of the movable rod 12 toward the discharge channel 10, so that the movable rod 12 is squeezed outward by the squeezing ball 15, and the movable rod 12 drives the impact rod 16 to follow the movement, and the impact rod 16 can impact the upper curved rod 11, so that the upper curved rod 11 is impacted and vibrates, so that the dust and other impurities attached to the upper curved rod 11 can be shaken off into the discharge channel 10, thereby improving the collection efficiency. At the same time, when the vibration of the upper curved rod 11 contacts the cleaning brush 7, the dust and other impurities attached to the cleaning brush 7 can be better removed, and the The vibration promotes the cleaning brush 7 to clean itself and improves the cleaning efficiency. When the fitting buckle plate 9 leaves the position of the discharge channel 10, the movable rod 12 will return to the initial position due to the elastic force of the elastic element. Finally, through the setting of the discharge channel 10, the light shield 5 is provided with the effect of gathering and cleaning impurities. At the same time, when the fitting buckle plate 9 is rotated counterclockwise for cleaning, it cooperates with the upper curved rod 11 of the discharge channel 10 to improve its subsequent cleaning effect and can conveniently shake off the impurities into the discharge channel 10 for centralized processing and collection.

[0023] like Figure 5 , Figure 6 and Figure 7As shown, in the present invention, an auxiliary mechanism is also provided, and the auxiliary mechanism includes a vent 21, and the vent 21 is fixedly opened on the light shield 5, one end of the vent 21 is opened on the inner wall of the light shield 5, and the other end is opened on the back of the light shield 5, and the opening of the vent 21 at one end of the inner wall of the light shield 5 is located on the cleaning path of the cleaning brush 7, a No. 1 ball 17 is fixedly installed on the outside of the impact rod 16, a lower bent rod 18 is fixedly installed on the outside of the upper bent rod 11, a drooping rod 19 is fixedly installed on the bottom of the impact rod 16, and a No. 2 ball 20 is fixedly installed on the bottom of the drooping rod 19, and the No. 2 ball 20 is arranged to fit the bottom surface of the discharge channel 10.

[0024] In the above technical solution, when the fitting buckle plate 9 rotates counterclockwise to the position of the discharge channel 10, the squeezing between the semicircular protrusion 13 and the squeezing ball 15 can push the movable rod 12 to move, and the movable rod 12 will drive the impact rod 16 to impact the upper curved rod 11. At this time, the contact between the impact rod 16 and the upper curved rod 11 is performed through the No. 1 ball 17, and the spherical surface of the No. 1 ball 17 will contact the outside of the upper curved rod 11, reducing the contact area, thereby reducing the damage to the upper curved rod 11, and increasing the service life of the upper curved rod 11, so that the observation experiment can be run for a long time. When the fitting gusset plate 9 is away from the discharge channel 10, the movable rod 12 will return to the initial position due to the elastic force of the elastic element, and the movable rod 12 will drive the impact rod 16 to return to the initial position. In the process of returning to the initial position, the back of the impact rod 16 will impact the lower curved rod 18. The impact between the impact rod 16 and the lower curved rod 18 forms a vibration, which makes the upper curved rod 11 vibrate twice, thereby promoting the shaking off of impurities on the upper curved rod 11, improving the overall shaking off effect, and after one vibration, the impact rod 16 is vibrated again to remove the residual impurities attached to the impact rod 16. The movable rod 12 is shaken off to improve the collection and processing efficiency of the discharge channel 10, and at the same time, it is prevented that the upper curved rod 11 shakes off part of the impurities on the impact rod 16 after a vibration, thereby improving the overall cleaning efficiency. During the movement of the movable rod 12, the movable rod 12 drives the drooping rod 19 to follow the movement through the impact rod 16, and the following movement of the drooping rod 19 will drive the second ball 20 to follow the movement, and the following movement of the second ball 20 can slide on the bottom surface of the discharge channel 10, thereby promoting the flow of impurities in the discharge channel 10, and if there are larger impurities in the discharge channel 10, the drooping rod 1 9 and the No. 2 ball 20 squeeze them out and promote the discharge effect of the discharge channel 10. The setting of the vent 21 can ensure internal air circulation while shading, prevent the internal temperature from being too high, and avoid the impact of temperature changes on optical elements or crack observations. Finally, by providing an auxiliary mechanism, a drooping rod 19 is provided on the impact rod 16, and a lower bending rod 18 is provided on the upper bending rod 11, so as to promote the shaking off and collection effect of impurities, and at the same time promote the discharge effect of the discharge channel, thereby improving the overall cleaning effect, improving work efficiency, and ensuring the stable operation of long-term observation experiments.

[0025] To summarize, in the concrete crack observation experiment, it is only necessary to place the workbench 1 outside the concrete crack to be observed, start the annular fixed lamp 6 and the working motor 3, and then the long-term stable light source observation experiment can be carried out. At the same time, through the rotation of the connecting plate 8 and the fitting buckle plate 9, the cleanliness of the light shield 5 can be ensured while providing a stable light source, thereby preventing dust and other impurities contaminated by long-term observation from affecting the lighting effect. At the same time, by providing a discharge mechanism and an auxiliary mechanism, the cleaning efficiency and impurity collection and processing efficiency can be improved, thereby improving the overall work efficiency and ensuring the stable operation of long-term observation experiments.

[0026] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-compacting shrinkage compensating concrete crack detection experimental device, comprising a workbench (1), characterized in that: Also includes: A placement table (2) is fixedly mounted on the top of the workbench (1); a working motor (3) is fixedly mounted on the top of the placement table (2); a triangular support plate (4) is fixedly mounted on the top of the workbench (1); an output shaft of the working motor (3) passes through and is rotatably mounted on the triangular support plate (4); and the outermost end of the output shaft of the working motor (3) is fixedly mounted on the outside of the connecting plate (8); A bracket (22) is fixedly mounted on the top of the workbench (1), an annular fixed lamp (6) is fixedly mounted on the outside of the bracket (22), the annular fixed lamp (6) is fixedly mounted on the inside wall of the light shield (5), the connecting plate (8) is rotatably mounted on the outside of the light shield (5), a fitting buckle plate (9) is fixedly mounted on the outside of the connecting plate (8), the fitting buckle plate (9) is slidably mounted on the light shield (5), the curvature of the fitting buckle plate (9) is the same as the curvature of the outer wall of the light shield (5), and a cleaning brush (7) is fixedly mounted on the fitting buckle plate (9) at a position on the inner wall of the light shield (5).

2. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 1, characterized in that: The light shield (5) is also provided with a discharge mechanism, the discharge mechanism comprising a discharge channel (10), and the discharge channel (10) is fixedly opened at the bottom of the inner side wall of the light shield.

3. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 2, characterized in that: An upper curved rod (11) is fixedly mounted on the side wall of the discharge channel (10), and a movable rod (12) is movably mounted through the top of the discharge channel (10), wherein the movable rod (12) is integrally composed of a straight rod (121) at a straight portion, a curved rod (122) at a curved portion, and a semicircular protrusion (13) at the top.

4. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 3, characterized in that: The movable rod (12) is slidably mounted in the light shield (5) via a bent rod (122) at a bent portion, an L-shaped rod (14) is fixedly mounted on the outside of the fitting buckle plate (9), and a squeezing ball (15) is fixedly mounted on the outside of the L-shaped rod (14).

5. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 4, characterized in that: An elastic element is provided between the outside of the movable rod (12) and the side wall at the top of the discharge channel (10), and an impact rod (16) is fixedly mounted on the outside of the straight rod portion of the movable rod (12).

6. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 5, characterized in that: The light shield (5) is also provided with an auxiliary mechanism, which comprises a vent (21), and the vent (21) is fixedly opened on the light shield (5).

7. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 6, characterized in that: One end opening of the vent (21) is located on the inner side wall of the light shield (5), and the other end opening of the vent (21) is located on the back of the light shield (5).

8. The self-compacting shrinkage compensating concrete crack detection experimental device according to claim 7, characterized in that: The ventilation opening (21) is opened at one end of the inner wall of the light shield (5) and is located on the cleaning path of the cleaning brush (7).

9. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 8, characterized in that: A No. 1 round ball (17) is fixedly mounted on the outside of the impact rod (16), a lower curved rod (18) is fixedly mounted on the outside of the upper curved rod (11), and a drooping rod (19) is fixedly mounted on the bottom of the impact rod (16).

10. A self-compacting shrinkage compensating concrete crack detection experimental device according to claim 9, characterized in that: A second round ball (20) is fixedly mounted on the bottom of the drooping rod (19), and the second round ball (20) is arranged to fit the bottom surface of the discharge channel (10).

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